Fix two possible nullptr deref

airsonic-main/src/main/java/org/airsonic/player/controller/CoverArtController.java

@@ -95,7 +95,9 @@ public class CoverArtController implements LastModified {
 
     public long getLastModified(HttpServletRequest request) {
         CoverArtRequest coverArtRequest = createCoverArtRequest(request);
-        //        LOG.info("getLastModified - " + coverArtRequest + ": " + new Date(result));
+        if (null == coverArtRequest) {
+            return -1L;
+        }
         return coverArtRequest.lastModified();
     }
 

airsonic-main/src/main/java/org/airsonic/player/controller/SubsonicRESTController.java

@@ -2115,7 +2115,10 @@ public class SubsonicRESTController {
         command.setShareRole(getBooleanParameter(request, "shareRole", u.isShareRole()));
 
         int maxBitRate = getIntParameter(request, "maxBitRate", s.getTranscodeScheme().getMaxBitRate());
-        command.setTranscodeSchemeName(TranscodeScheme.fromMaxBitRate(maxBitRate).name());
+        TranscodeScheme transcodeScheme = TranscodeScheme.fromMaxBitRate(maxBitRate);
+        if (transcodeScheme != null) {
+            command.setTranscodeSchemeName(transcodeScheme.name());
+        }
 
         if (hasParameter(request, "password")) {
             command.setPassword(decrypt(getRequiredStringParameter(request, "password")));